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Finding the Fourth Proportional to 3,219.31, 4,828.41 and 967.81

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Solution

The fourth proportional to 3,219.31, 4,828.41 and 967.81 is: 1,451.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,219.31 : 4,828.41 = 967.81 : x
  2. Step 2: Convert to fraction form
    3,219.31/4,828.41 = 967.81/x
  3. Step 3: Cross multiply
    3,219.31x = 4,828.41 × 967.81
  4. Step 4: Simplify right side
    3,219.31x = 4,672,975.04
  5. Step 5: Solve for x
    x = 4,672,975.04/3,219.31
  6. Step 6: Final answer
    x = 1,451.54

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.